- (NSCollectionLayoutGroup*)
      createGroup:(id)layoutEnvironment
    cellMaxHegiht:(CGFloat)cellMaxHegiht {
  CGSize size = layoutEnvironment.container.contentSize;
  CGFloat interItemSpacing =
      (size.width - kHorizontalMargin * 2 - kCellWidth * kCountOfActionPerRow) /
      (kCountOfActionPerRow - 1);

  NSCollectionLayoutItem* item = [NSCollectionLayoutItem
      itemWithLayoutSize:
          [NSCollectionLayoutSize
              sizeWithWidthDimension:[NSCollectionLayoutDimension
                                         absoluteDimension:kCellWidth]
                     heightDimension:[NSCollectionLayoutDimension
                                         estimatedDimension:cellMaxHegiht]]];

  NSCollectionLayoutSize* horizotalLayoutSize = [NSCollectionLayoutSize
      sizeWithWidthDimension:[NSCollectionLayoutDimension
                                 fractionalWidthDimension:1.0]
             heightDimension:[NSCollectionLayoutDimension
                                 estimatedDimension:cellMaxHegiht]];

  NSCollectionLayoutGroup* group;
  group = [NSCollectionLayoutGroup
      horizontalGroupWithLayoutSize:horizotalLayoutSize
                   repeatingSubitem:item
                              count:kCountOfActionPerRow];
  group.interItemSpacing =
      [NSCollectionLayoutSpacing fixedSpacing:interItemSpacing];

  return group;
}